William e



W. E. GARRIGUE, DECD. 1. c. GUEIITHNER. ADMINISTRATOR.

EVAPORAIOR. APPLICATION FILED FEB. I9. I919.

Patented. Sept. 30, 1919.

V Wdlia I =I767mC unrrn WILLIAM E. GAEEEGUE, DECEASED, LATE OF UHICAGQ, ILLINOIS, BY {FGHN GUENTE NEE, ADMIHISTMTOEL, OZ, GHICAGO, ILLIIIGIS, ASSIGN 01ft Ti) WICLLIAM (irARRIG-UE do COMPANY, INC., @Z" NEW 393K, El. E1, 4%. CQRIORATIDN 03 NEW YQRI L' 1,311 "Kidd.

Patented Sept. 3Q rare.

Original application filed September 28, 1917, Serial No. 188,?52 Divided and this application. filed February To all whom it may concern:

Be it known that VVnmIAM E. Gnnnreus, now deceased, forn'ierly a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, invented certain new and useful improve ments in Evaporator-s, of which the followin is a specification.

he invention of the said VVIIILJAEE l GARRIGUE relates to apparatus for evaporating liquids, and the present application is a division of his patent entitled fiflvaporaters, No. 1,298,925, dated April 1, laid. The latter application describes and claims a construction in which a steam heated ca andria is provided with various improved details of construction such that the liquid to be evaporated will circulate upwardly through inner tubes and descend through outwardly arranged tubes so as tosweep all crystals and other solid material toward the center in the space beneath the lower head or tube sheet. I In evaporators of this character, the vapors are drawn by vacuum from the ealandria to a; condenser, and the invention which forms the subject-matter-of the present application consists in causing the vapors to pass through an elevated separating vessel on the Way to the condenser, the bottom of said separating vessel being connected by a baremetric column of liquid with a vessel on a: lower level containing liquid. The construction is such that any liquid carried over from the calandria to the elevated separating vessel with the vapor will drop through the tube to the vessel below, in which it will, be readily apparent. This furnishes an in dic-ation that the heating is being conducted too rapidly, so that the heat supply may be; diminished until liquid no longer appears in the vessel at the bottom of the tube referred to. This vessel may be connected ii"; desired with the bottom of the evaporator and the liquid collected in the vessel drawn back into the system Whenever desired.

In order that a clearer understanding of the invention may be had, attention is hereby directed to the accompanying drawing forming part of this application and illus-.

trating one embodiment of the invention. In the drawing the figure represents a view Serial Ito, 273,163.

l to

and 3 extending across the same. A. casing 4 extends upwardly from casing 1 and is provided with a top plate 5. Casing i is closed at the bottom by a plate 6, which pref erably slopes downwardly from the periph-- cry to the center thereof, providing a below the lower header, into which e lends a pipe connection 3 for introducing the liquid to be evaporated. The central or louver portion of the bottom plate 6 of the evaporator below the calandria is connected by a tubular men'iber '9 with the vessel 19 in vvl'iich crystals and solid matter are he collected.

The evaporating tubes, which between and through the heads 2 and comprise a coi'isiderable number of inner tubes 12 and a series of outer tubes 13 of larger diameter than tubes 12. A heating medium, such as superheated steam, may be introduced at the axis of the calandria, in a space surrounded by the inner ones of tubes 12, by means of a pipe IA. Preferabiy, a conical dash plate 16 is secured about the lower portion of pipe 14. Also preferably, baliie plates l7, l8 and 19 are mounted between the tubes in such a manner as to cause the steam to pass around the inner tubes 12 successively from the center tovvard the periphery and then around the outer tubes 13, The outer casing 1 may be provided with a pair of vents 20 and 2i connected with outer steam space Within. the calandria, through "which air and other non-condens able gases may he removed. lhe apparatus described may, of course, be connected with similar apparatus for multiple effect ation, if desired. A drip pipe'QQ is connec with the lower portion of the space i the calandria, to reniiove the condensed steam. The details described ioi'rn no part of the present invention;

The upper portion or the evaporator is connected, is usual in apparatus of tl'ris character, by means of elbow 23,'pipe 24,

' separator andpipe connection @o'wiih open t a condenser :27. vacuum being maintained in the system as by means of a vacuum pump 28, connected to the condenser by a pipe 2!). The condenser is connected by pipe 30 to the usual hot well 31.

Liquid risingwith, the vapor from'the inner tubes 12 of the g'alandria is deflected by dash plate 16 toward the periphery and Falls into the outer tubes 13 in which it will descend, move toward the (enter in the bot- .tom space 7 and then rise through the inner tubes, so that there will be a continuous circulation as long as liquid remains in the apparatus. Crystals formed in the liquid will be swept along the bottom plate (3 of the evaporator toward the center by the current of liquid and will drop into the collecting vessel 10. A pipe connection 32 provided with valves 33 and 3+1 extends from the bottom of collecting vessel 10 to the space 7 at the bottom of the evaporator, so

that liquid in vessel 10 may be drawn back into the system when. desired upon opening valves 33 and 34, steam being blown into lengtlrto balance the vacuum in the system, and may be tilled with water. Liquid dropping througji-z the separating chamber and pipe 37 will appear in the liquid in vessel 38 and thereby provide an indication of the manner in which the process is being, carried out. Vessel 38 may be connected by pipe connection 3!, provided with a valve 40, with pipe 32. so that when desired the liquid in vessel 38 may be drawn into the evaporator, valves 34 and l0 being opened and valve 33 closed.

\Vhat I claim is: 1 q

1. In an evaporator. the combination with. a calandria, a separating chamber and a condenser connected in series, of an open vessel containing liquidbelow said separating chamber, and a tube containing a barometric column of liquid connecting the lower portion of said chamber with said open vessel.

2. in an evzqiorator, the combination with a calandria, a separating chamber and a condenser connected in series, of an open vessel containing liquid below said separating chamber, a tube containing a barometric column of liquidconnecting the lower portion ofsaid chamber with said open vessel, and a valved connection between said vessel and the lower portion of the evaporator.

This specification signed and witnessed this 15th day of Feb, 1919.

JOHN (J. GUENTHNER,

Administrator of the estate of William E.

Gar 1719M, decal. 

